How to create a Singleton PAttern in BrightScript?

I can include a common brs file, but that doesn't seem to save the values of variables across multiple scenes /scripts.

The following is what I tried to do but the methods referenced in the associative array return as invalid:

Function Utils() as Object
    m.obj = createobject("roAssociativeArray")
     m.obj.testing = Function()
       end Function 
    Function reset()
     end Function 


    this = {
        obj: m.obj, 
        testMethod: m.obj.testing, 
        reset: resetCode
    }
    return this
end Function

So the following returns as invalid

Reporting().testMethod
Reporting().reset

 However, the following does NOT return as invalid

Reporting().obj

What am I doing wrong?